Lappet for spinning and twisting frames.



" Jl WI I LAPPET FOR SPINNING AND TWISTING FRAMES.

APPLICATION EILEID OCT. 14, 1908.

I Patented May 31, 1910.

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55% WMLWM i ia? O L mocaAwERs. WAS q JOHN WILLIAM COOK, 0F EASTLEIGH, DIDSBURY, ENGLAND.

LAPPET FOR SPINNING AND TWISTING FRAMES.

Specification of Letters Patent.

Patented May 31, 1910.

Application filed October 14, 1908. Serial No. 457,663.

To all whom it may concern:

Be it known that I, JOHN WVLLLIAM Coon,

of Eastleigh, Didsbury, in the county of Lancaster, England, have invented certain new and useful Improvements in and Connected with Lappets for Spinning and Twisting Frames, of which the following is a specification.

My invention relates to the lappets for carrying and supporting the thread wires of preparation, spinning and twisting frames. of wood but lately it has become customary to construct them of metal and to so arrange the thread wire holding device that suitable sequence it often happened that the thread wire was moved out of its correct position thus causing bad spinning. ooden lappets become rapidly soaked with oil and are thus 1 highly inflammable beyond which the oil soaked surface retains fluff, dirt and other foreign matters which become mixed with the roving being spun and cause thick and also dirty places in the yarn. In ho-t climates wood lappets warp and require to be constantly renewed. In order to overcome the defects of wooden lappets metal lappets were introduced. Vhile obviating certain of the defects possessed by wooden lappets several of the earlier forms of metal lappets were unsatisfactory from a spinners pointof view. The chief defect of ordinary types of metal lappets is that they present fluff and dust retaining surfaces which rapidly become choked with foreign matter of this de scription and in some cases these surfaces are so difficult ofaccess that the fluff or dust can only be removed when the frame is stopped and the lappets turned upward. Another defect found in many forms of metal lappet is that on the underside of the lappet there are projections which cause damage to the tip of the pirn or bobbin should the latter lift on the spindle and also when dofling isbeing performed. In other Hitherto these lappets were made I forms of metal lappet the peculiar construction employed tends to weaken the lappet at the rear or hinge portion to such a degree that under ordinary working conditions the lappet becomes damaged at this rear portion, which should be very strong in order to hold the lappet and thread wire in alinement, and consequently the lappet is rendered useless. I have in constructing my form of lappet allowed for all these defects and have produced a form of lappet which possesses certain unique features.

In constructing my form of lappet I have avoided fluff retaining surfaces diflicult of access, the surfaces presented being smooth and readily cleaned. There are no projections whatever on the underside of my lappet and consequently nothing likely to damage the tip of the bobbin. The rear of my form of lappet is of strong construction and besides providing a large bearing surface at the hinge will not under ordinary mill usage become either bent or broken. In addition to these improvements I have so constructed my lappet that the thread wire is of maximum strength due to the said wire being of the same section throughout its length.

My lappet as will be described later is constructed from one piece of metal or other suitable equivalent material into a boX like form.

In order that my invention may be better understood I have appended a sheet of drawings, whereon:

Figure 1. is a side elevation of one form of my lappet. Fig. 2. is a front elevation of the form of lappet shown in Fig. 1, the thread wire being in section. Fig. 3. is a plan view of a similar lappet partly in section. Fig. 4. is a front elevation of the form of hinge I employ with this particular construction of lappet. Fig. 5. is an end elevation of Fig. 4. Fig. 6. is a side elevation of another form of lappet in section. Fig. -7. is a view showing the lappet raised. Fig. 8. is a plan view of the form of lappet shown in Fig. 6. Fig. 9. shows a third modification in sectional side elevation. Fig. 10. is a front view of the lappet shown in Fig.

9. Fig. 11. is a plan view of Fig. 9, partly v in section. Fig. 12. shows a fourth modification in sectional side elevation. Fig. 13. is

a front elevation of the lappet shown in I have shown various modifications of my improved lappet the essential difierence lying in the method of holding the shank of the thread wire and the method of obtaining adjustment of the said thread wire.

I will first of all deal with the construction of lappet shown in Figs. 1, 2, 3, 4, 5, 7 and 8.

In carrying my invention into effect I construct a lappet A (this statement applies to all modifications as well as to the form shown in Figs. 1, 2 and 3) from a single piece or sheet. of metal or other suitable material in a box like form (i. 6. with top, bottom, front and two side walls). I can either draw stamp or otherwise form the lappet as I desire. At the front of the lappet I drill or suitably form a hole through which the shank of the thread wire D passes. Within the lappet (2'. 0. between the walls) I place a suitably shaped block of metal or other suitable material. I employ a metal or other material block in all my forms of lappet, but I construct the said block differently in each case. The shank D of the thread wire is formed of any suitable section but I prefer to form it D shaped in section. In Figs. 1, 2 and 3 the block is marked B. The block B is formed with a projection F which penetrates the lower wall of the lappet B in order to retain the said block B in position within the lappet. It will be understood that I can employ further similar projections to F or equivalents, to penetrate other walls of the lappet if I find it necessary. The block B is suitably drilled to receive the shank D of the thread wire. At a suitable angle to the hole which receives the thread wire I drill and tap with a suitable screw thread a second hole. The tapped hole c0mmunicates with the first named hole for the reception of the thread wire shank D. I employ a screw or bolt C which I screw into the hole tapped to receive it until its end bears against the shank D of the thread wire and by forcing it tightly against the metal block B holds the said thread wire in position.

I can if I desire it construct the lappet and drill and tap the block B to allow the screw or bolt 0 to enter from the top of the lappet or from either side.

Although I have not shown it I can if I desire, dispense with the screw holding device and employ a wedge or suitable equiva lent which will force the shank of the thread wire against the block B and hold it in position. I can only obtain longitudinal adjustment of the thread wire by the construction shown in Figs. 1, 2 and 3 and I obtain any lateral adjustment that may be necessary in the following well known manner. I cut in the hinge E which is attached to the lappet board L two slots E through which the holding screws E pass. The slots E are made sufiiciently large to enable a lateral adjustment of the lappet A upon the screws or other holding devices E being slackened.

In the form of lappet I show in Figs. 6 and 8 I am enabled to obtain both a longitudinal and lateral adjustment of D without having to resort to the method employed in the lappet shown in Figs. 1, 2 and 3. The lappet A, the block H and projection K are similar to those parts already described. I drill a hole as before to receive the shank D of the thread wire. I drill a second hole at right angles to the hole for the reception of D and suitably tap it with a thread screw to receive the screw or bolt I. The end of the screw or bolt I upon being screwed up forces the shank D of the thread wire in contact with the metal block H. I obtain both longitudinal and lateral adjustment of the thread wire in the following manner. I provide the slots S in the upper face of the lappet as shown. I unscrew I which removes pressure from D and allows any longitudinal adjustment that may be necessary. At the same time the unscrewing of I allows the block H to be rotated or swiveled, the projection K forming the fulcrum. By swiveling H a lateral adjustment of the thread wire can be obtained. I can employ a large headed screw instead of the type shown and can place it centrally to better grip the lappet when screwed up and also to enable me to dispense with the slot S.

In Figs. 9, 10 and 11, another form of lappet is shown, in which I can obtain either lateral or longitudinal adjustment of the thread wire as desired. I employ a lappet A having the walls as hitherto and a block B disposed within the lappet. I drill the block B or otherwise cut in it a hole H. It will be seen that the hole H is of larger width than the shank of the thread wire D and also that it increases in width from front to back of the block B. I suitably drill and tap the block B to receive two screws or bolts C, C which penetrate the block B from opposite sides. When the said screws or bolts G, C are screwed into the holes tapped to receive them their ends come in contact with the shank D of the-thread wire and hold it in position. By unscrewing the screws or bolts and releasing the shank I can obtain longitudinal adjustment while unscrewing either C or C and screwing up G or C to again hold the shank D tight I obtain lateral adjustment of the thread wire.

In Figs. 12, 13 and 14, I show another modification of my lappet. The lappet A is formed as hitherto and has a block B disposed within it as hitherto. The hole in the front of the lappet through which the thread wire shank D passes is made somewhat larger in width than the said thread wire shank as is shown in Fig.18. I drill the usual hole in the block B to support the thread wire shank D and I drill and tap a second hole to receive the screw or bolt F. I cut teeth I in the block B which mesh in the threads of a worm or screw C. I fasten the worm or screw to the lappet at H I employ the screw or bolt F to hold the thread wire in position and by unscrewing F I can obtain longitudinal adjustment of the thread wire, while by rotating the worm or screw C I can partly rotate the block B to obtain a lateral adjustment of the said thread wire. I do not show any projection from the block B into the wall of the lappet A, but I can employ a similar projection as that previously described if I so desire.

Claims.

1. A lappet for spinning and twisting machines formed from a single piece of metal the body portion of which is bent over upon itself to form the top, bottom and one end thereof, and the sides of which are bent up to com lete a box-like inclosure, the bottom being free from fluff-retaining projections, a block mounted within the inclosure and having an aperture, said block being confined between said top and bottom, and a thread guide having its shank mounted in said aperture.

2. A lappet for spinning and twisting machines formed from a single piece of metal the body portion of which is bent over upon itself to form the top, bottom and one end thereof, and the sides of which are bent up to complete a box-like inclosure, the bottom being free from fluff-retaining projections, a block mounted within the inclosure and having an aperture, said block being confined between said top and bottom, and having a projection fitting an opening in one wall of the said box-like inclosure, and a thread guide having its shank mounted in said aperture.

3. A lappet for spinning and twisting machines formed from a single piece of metal the body portion of which is bent over upon itself to form the top, bottom and one end thereof, and the sides of which are bent up to complete a box-like inclosure, the bottom being free from fluff-retaining projections, a block mounted within the inclosure and having an aperture, a thread guide having its shank mounted in said aperture, and means accessible from outside the box-like inclosure for securing the thread guide in position.

4:. A lappet for spinning and twisting machines formed from a single piece of metal the body portion of which is bent over upon itself to form the top, bottom and one end thereof, and the sides of which are bent up to complete a box-like inclosure, a block mounted within the inclosure and having a tapering aperture, a thread guide having its shank mounted in said aperture, and set screws mounted in said block and projecting into the aperture from opposite sides.

In testimony whereof I have affixed my signature, in presence of two witnesses JOHN WILLIAM COOK.

Witnesses:

FoUTz NASMITH, FRED GoooH. 

